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A high-power diesel engine connecting rod axial fatigue performance testing device and its application method

A technology for fatigue performance testing and high-power diesel engines, which is applied in the direction of measuring devices, machine gear/transmission mechanism testing, and application of repeated force/pulsation force to test the strength of materials, etc. It can solve the problems of insufficient strength and rigidity, non-adjustable shaft diameter, and simple structure and other problems, to achieve the effect of easy installation and operation, good lubrication effect and good applicability

Active Publication Date: 2020-02-07
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-power diesel engine connecting rod axial fatigue performance testing device and its use method to solve the problems of existing connecting rod fatigue testing devices in the prior art, such as simple structure, insufficient strength and rigidity, poor fatigue resistance, Due to the problems of non-adjustable shaft diameter and lack of lubrication design, this high-power diesel engine connecting rod axial fatigue performance test device has the characteristics of high rigidity, fatigue resistance, convenient disassembly and adjustable aperture, and can be applied to large diesel engine connecting rods with different apertures Fatigue performance test, in addition, provide a lubricating oil circulation device for large-scale diesel engine connecting rod fatigue test, which has the characteristics of lubricating oil circulation flow and adjustable lubricating oil pressure, and can simulate the lubrication state of the connecting rod when it is in service

Method used

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  • A high-power diesel engine connecting rod axial fatigue performance testing device and its application method
  • A high-power diesel engine connecting rod axial fatigue performance testing device and its application method
  • A high-power diesel engine connecting rod axial fatigue performance testing device and its application method

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Embodiment Construction

[0032] The embodiments of the present invention will be described in detail with reference to the accompanying drawings. This embodiment is based on the technical solution of the present invention, and provides detailed implementation and specific operation procedures, but the protection scope of the present invention is not limited to the following embodiments.

[0033] As shown in the figure, a high-power diesel engine connecting rod axial fatigue performance test device is used to test the axial fatigue performance of the test connecting rod 12, including a lubrication device, a large end fixture connected to the fatigue test machine table, and The small end clamp connected to the actuator cylinder of the fatigue testing machine, the large end clamp and the small end clamp of the present invention adopt a split design, and use positioning pins I105 and II602 for positioning, which is easy to install and operate; the connecting rod 12 to be tested One end is provided with a smal...

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Abstract

The invention provides an axial fatigue performance testing device for a connecting rod of a high-power diesel engine and an application method thereof. The axial fatigue performance testing device comprises a lubricating device, a large-end fixture connected with a table of a fatigue testing machine and a small-end fixture connected with an actuating cylinder of the fatigue testing machine, wherein the large-end fixture is connected with the lubricating device through an oil return pipe, and the small-end fixture is connected with the lubricating device through an oil inlet pipe; the large-end fixture comprises a chassis simulation crankshaft pin and a large-end fixture mechanism, the small-end fixture comprises a top plate, a simulation piston pin and a small-end fixture mechanism, and the lubricating device comprises an oil tank, an oil outlet, an oil return port, a gear pump, a power switch, an overflow valve, a pressure gauge and a pressure gauge switch. The axial fatigue testingdevice has the characteristics of high rigidity, fatigue resistance, convenient assembly and disassembly and adjustable aperture, can be applicable to fatigue performance testing for large diesel engine connecting rods with different apertures, has the characteristics of circulation flow of lubricating oil and adjustable pressure of the lubricating oil through setting the lubricating device and can simulate the lubricating state of the connecting rod in service.

Description

Technical field [0001] The invention relates to a connecting rod mechanical performance testing device, belonging to the technical field of structural component mechanical performance testing, in particular to a high-power diesel engine connecting rod axial fatigue performance testing device and a use method thereof. Background technique [0002] The connecting rod is the core part of the engine. Its function is to connect the piston and the crankshaft, convert the reciprocating motion of the piston into the rotational motion of the crankshaft, and output power outward. The connecting rod mainly bears the deflagration pressure from the cylinder and the inertial force of the connecting rod itself and the piston when it moves. The main failure mode is fatigue fracture. Fatigue performance testing is an indispensable item in the development and application of the connecting rod. For the fatigue test of the connecting rod of a large diesel engine, due to the large weight, size, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/02G01N3/32G01N3/02
CPCG01M13/02G01N3/02G01N3/32G01N2203/0073
Inventor 马江南陈沛张欣耀查小琴张利娟郑国华
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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